I'm experiencing long shutdown times in Windows 7 Professional on newly built machines. After joining to a domain, they take over ten minutes to shut down. There is almost no software installed besides VNC and Office 2010. I ran a shutdown trace with Windows Performance Recorder and generated a graph of what's running during these long shutdowns. Most of the shutdown processes occur within the first minute or so and then
wininit.exe (blue) and
So how do I go about reducing shutdown times in this scenario?